WO2002035490A1 - Microcircuit integre pour alarme et son procede d'utilisation - Google Patents

Microcircuit integre pour alarme et son procede d'utilisation Download PDF

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Publication number
WO2002035490A1
WO2002035490A1 PCT/NO2001/000423 NO0100423W WO0235490A1 WO 2002035490 A1 WO2002035490 A1 WO 2002035490A1 NO 0100423 W NO0100423 W NO 0100423W WO 0235490 A1 WO0235490 A1 WO 0235490A1
Authority
WO
WIPO (PCT)
Prior art keywords
alarm
chip
signal processing
processing circuit
signals
Prior art date
Application number
PCT/NO2001/000423
Other languages
English (en)
Inventor
John Olav Rasmussen
Original Assignee
Nordan As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nordan As filed Critical Nordan As
Priority to EP01981177A priority Critical patent/EP1330801B1/fr
Priority to DE60108262T priority patent/DE60108262T2/de
Priority to US10/399,846 priority patent/US6989746B2/en
Priority to AT01981177T priority patent/ATE286608T1/de
Priority to AU2002212836A priority patent/AU2002212836A1/en
Priority to DK01981177T priority patent/DK1330801T3/da
Publication of WO2002035490A1 publication Critical patent/WO2002035490A1/fr

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass

Definitions

  • the invention relates to an alarm chip and the use of the alarm chip, the alarm chip preferably being used in connection with so-called shell-protection of buildings, installations or structures, wherein the shell-protection is preferably arranged to give warning of burglary or undesired entry into the building, installation or structure, but wherein the shell-protection possibly also has a preventive effect on possible intruders, the alarm chip preferably being positioned on windows or doors, possibly on or in associated frames or casings, of the building, installation or structure so that a burglary attempt, if any, is thereby detected, registered and communicated to at least one alarm unit/alarm system located centrally and/or externally and arranged to the building, installation or structure.
  • the background of this invention is the limitations, drawbacks or problems connected to known technical solutions and equipment and in particular sensors and sensor techniques in connection with alarms that are used in order to give warning of burglary or undesired entry into buildings, installations or structures.
  • Sensors also called detectors, and sensor techniques applied for picking up signals with the aim of registering and giving warning of a burglary attempt or other undesired entry into for example buildings, are known in several variants.
  • a so-called vibrator technique in which a low-energy oscillator is mounted on the glass of a window or door, possibly on the associated frame or casing, the oscillator continuously vibrating the glass of the window or door at a particular frequency. By breakage of the glass, frame or casing the vibration stops or is disturbed and the alarm is activated.
  • PIR detector passive infrared ray detector
  • Acoustic detectors are also available, provided with an acoustic sensor which picks up, e.g. when glass is being broken, the associated acoustic frequency pattern, after which an alarm signal output activates an associated alarm.
  • More recent detectors of this type are provided with equipment which may pick up signals ranging over the entire acoustic frequency spectrum, such detectors being arranged to recognize and distinguish alarm-justifying (real) frequency patterns from non-alarm-justifying (false) frequency patterns.
  • acoustic detectors are mounted freestanding in the ceiling or on the wall of a building, whereas some types may be inserted into the window frame or casing.
  • sensors that pick up shock-like motions or vibrations caused for example by a burglary attempt in a building, the sensors being based on seismology technology.
  • Such sensors are often used in so-called accelero eters, the most common accelerometers being provided with sensors in the form of piezoelectric crystals which are sensitive to physical influence, e.g. vibrations, and the piezoelectric crystals generating, by such influence, measurable electric voltage.
  • vibrations may be characterized by a course of vectorial accelerations, for example in the form .of oscillations at one or more frequencies, possibly in the form of one or more frequency patterns, this course of acceleration of said crystals being transformed into a corresponding course of electric voltage output signals which may be registered and possibly processed further.
  • Burglary- related vibrations for example related to an attempt to break, smash, drill or saw through a window, a door or an associated frame or casing, could thereby be. detected, after which a connected alarm is activated.
  • accelerometers are used in a number of connections and for various purposes. For example, they are used extensively for navigation purposes, for example in connection with so-called inertial navigation, in which accelerometers are integrated together with other equipment to indicate the exact position of an object, e.g. an aeroplane or a boat, relative to a known starting position.
  • An accelerometer may otherwise be used as a signal pick-up in a microphone or in a pick-up head of a record-player.
  • Accelerometers are also used in connection with air bags in vehicles, in which, for example, vibrations related to collisions are detected by an accelerometer.
  • magnet contacts are a well-known technical solution to prevent burglary attempts or other undesired entry into a building, for example.
  • the function of magnetic contact sensors is based on magnetic balance between a permanent magnet and a cooperating electrically activated magnet, the permanent magnet being placed, for example, on a side surface of a window frame or a door leaf, whereas the electrically activated magnet is positioned in the window or door casing in a position adjacent to the permanent magnet.
  • current is supplied to the electrically activated magnet, this magnet is in magnetic contact and balance with the permanent magnet, which condition is considered as a normal condition when the magnet is activated.
  • Magnetic contact sensors are available in different embodiments, it normally being possible to choose between surface-mounted, inserted or overlying magnet contacts . Such magnetic contact sensors are often used as an additional protection together with other sensors and sensor techniques, normally together with passive infrared ray detectors.
  • Laser technique is also used in connection with alarm systems. Through a laser device movements both in and outside the room, in which the laser device is located, are detected, this unlike for example a passive infrared ray detector, which only detects movements in the room in question where the detector is placed.
  • the transmission of signals is normally carried out by means of at least one cabled connection between the sensor(s) and a central and/or external alarm unit/alarm system arranged to the building, installation or structure, but it is also possible to transmit signals through wireless connections. Besides, it is technically possible to transfer signals through, for example, the existing power network of a building, possibly through optical-fibre ' cables .
  • sensors utilize technology which is unsatisfactorily developed with respect to giving warning of burglary or other undesired entry into a building, installation or structure, or the technology/sensor is, at the present time, too expensive to be used for this purpose, for example the acoustic detector and the laser device.
  • some of these sensors for example the low- energy oscillator, is difficult to calibrate, in the sense that it is difficult to distinguish real signals (alarm signals) from false signals (non-alarm signals), and that the sensors therefore often output alarm signals in connections where no burglary is committed or there is no undesired entry into a building, for example.
  • the passive infrared ray detector (the PIR detector) is by and large arranged, and is used, for protecting rooms in buildings, installations or structures, and this detector therefore does not provide any shell-protection for the building, installation or structure.
  • the object of the invention is to provide an alarm chip which is preferably, but not necessarily, used in connection with shell-protection of buildings, installations or structures, in which, in use, the alarm chip is to give warning of a burglary attempt or an attempt at undesired entry into buildings, installations or structures. It should be possible for the alarm chip to be manufactured with small external dimensions, a small power consumption, preferably wireless signal transmission and at a competitive price. Besides, alarm chips arranged to one access opening each, should preferably allow independent connection to a central and/or external alarm unit/alarm system.
  • the alarm chip Properly arranged to the access openings of a building, an installation or a structure, the alarm chip should be able to replace, completely or partially, known sensors or sensor techniques connected to an alarm unit or an alarm system, the above- mentioned drawbacks of known technique thereby being avoided or reduced.
  • the object is realized through the use of an alarm chip which is arranged with the equipment and components necessary for realizing the object of the invention.
  • the alarm chip is s preferably disposed on the glass of the windows and/or doors of a building, an installation or a structure, possibly disposed on or inserted into associated frames or casings, possibly disposed on or inserted into a glassless door or the casing thereof, the signal transmission preferably being 0 implemented by means of a wireless connection between the alarm chip and at least one central and/or external alarm unit/alarm system arranged to the building, installation or structure.
  • the alarm chip is provided with components and equipment s which are assembled entirely or partly in a printed circuit board, and in which the components are constituted by at least an accelerometer, a signal transmitter preferably formed by a radio frequency transmitter (RF transmitter), and an energy source, preferably a lithium battery.
  • ADC-component an analogue-to-digital converter
  • ASIC application-specific integrated circuit
  • the signal processing circuit may be positioned separate from, but still connected to, the 0 alarm chip, this signal processing circuit being positioned, for example, in or at the alarm unit/alarm system arranged to the building, installation or structure.
  • an accelerometer is provided with at least one sensor (signal pick-up device), for example piezoelectric crystals, arranged to pick up movements/vibrations and convert them into analogue electric signals.
  • signals may possibly be processed further by means of suitable electronic components arranged to the accelerometer ⁇ or signal processing circuit, the output signals from said sensor(s) being converted into output signals in the form of a measurable electric quantity, e.g. voltage, current, resistance or capacitance.
  • Such electronic components may also process the signals output from said sensor(s), so that the output signals will have a proportional (linear) relation to the acceleration values measured, possibly so that the output signals will have a form of non-linear relation to the acceleration values measured.
  • the accelerometer may be provided with one or more sensors, wherein the sensor(s) may detect motions in one direction (one-dimensional), two directions (two-dimensional) or three directions (three-dimensional) and this in time with the movement(s) or vibration(s) , e.g. material vibrations and vibration patterns, which are transferred to the alarm chip upon physical influencing of the medium, e.g. a window or a door, to which the alarm chip is fixedly arranged.
  • This physical influence may be constituted by normal influencing forces in the form of knocking, scraping, rain, hail, wind or acoustic waves/noise.
  • abnormal influencing forces are constituted mainly by the movements caused by the breaking of the glass of a window or door 1 U
  • Analogue output signals are transferred from the accelerometer to the ADC-component, the ADC-component preferably being arranged to an electronic signal processing circuit placed in the alarm chip.
  • analogue or digital output signals may be transferred, preferably in a wireless manner, to a signal processing circuited located externally to the alarm chip and within or at said alarm unit/alarm system, a possible transmission of analogue output signals assuming that an ADC-component is disposed for example in the external signal processing circuit connected to the alarm unit/alarm system.
  • the signal processing circuit may be present for example in the form of soft-ware driven by a processor in a general computer connected to the alarm unit/alarm system.
  • the analogue signals output from the accelerometer are converted into digital output signals, which may then be signal processed/registered in the electronic signal processing circuit (preferably an ASIC).
  • the signal processing circuit is arranged to register continuously accelerations (dv/dt) in the form of one or more specific patterns of motional change corresponding to one specific influencing force.
  • the digital acceleration signals are filtered continuously and compared with known patterns of motional change corresponding to normal or abnormal influencing forces.
  • known patterns of motional change have been pre-programmed into the signal processing circuit, the signal processing circuit being arranged, at the same time, to be able to distinguish normal patterns of motional change from abnormal patterns of motional change.
  • so- called algorithms preferable seismological algorithms, are used.
  • Such algorithms provide, in the form of programs, a series of instructions as to how the incoming flow of acceleration values is to be signal-processed, including how signal characteristics of patterns of motional change corresponding to normal and abnormal influencing forces are to be recognized and distinguished from each another, the incoming acceleration values being available in digital form (from the ADC-component) as a flow of instantaneous values of the accelerations (dv/dt) measured by the accelerometer.
  • the signal processing circuit outputs a non-alarm signal (a so-called "alive & well” message), whereas by abnormal motional change patterns the signal processing unit outputs an alarm signal.
  • the output signals preferably consist of both alarm signals and non-alarm signals ("alive & well” messages), in which case the output signals in normal circumstances mainly consist of "alive & well” messages.
  • "alive & well” messages By transmitting "alive & well” messages to the alarm unit/alarm system it is continuously confirmed that there are no abnormal conditions, e.g. a burglary, at the access opening where the alarm chip is disposed. This makes the possible use of e.g. a radio interference source in order to block or disturb the output signals of the alarm chip difficult since the alarm unit/alarm system is continuously expecting to receive an "alive & well” message.
  • the output signals are preferably output in more or less continuous signal pulses, which requires electrical energy.
  • the alarm chip is provided with a battery as energy source, frequent output of "alive & well” messages will increase the power consumption of the alarm chip, so that the battery is thereby emptied unnecessarily fast. Therefore, it is desirable that emission of "alive & well” messages should be limited to the necessary minimum.
  • a so-called pre-filtering of incoming acceleration signals may be carried out in the signal processing circuit. In this pre-filtering the signals are first processed in a simplified part of said algorithms, in which the course of acceleration corresponding to simple and/or frequently occurring normal motional changes or motional change patterns are recognized. On recognition of acceleration courses corresponding to such motional changes/change patterns, the signal processing unit is arranged, for the purpose of saving power, to stop the forwarding of the signals to the alarm unit/alarm system.
  • a preferred solution to this problem is to transmit coded/encrypted "alive & well" messages in a so- called pseudo-random sequence, each message containing for example information to the alarm unit/alarm system about the ⁇ identity of the alarm chip, when the next message will be sent and which coded/encrypted format this message will be available in, so that by each message the alarm unit/alarm system will be prepared to receive and decode an "alive & well" message, or alternatively to activate an alarm by any irregularities in the expected signal.
  • the transfer of signals between the alarm chip and an alarm unit/alarm system located centrally and/or externally, possibly through an externally located signal processing circuit, may be carried out by means of a cabled or preferably a wireless connection.
  • Wireless transmission of signals is implemented by means of a transmitter, preferably a radio frequency transmitter, arranged to the alarm chip.
  • the external alarm unit/alarm system possibly the external signal processing circuit, has a cooperating and compatible receiver, preferably a radio frequency receiver, arranged thereto, this receiver possibly being arranged also to receive signals from other alarm chips correspondingly arranged to the access openings of the building, installation or structure.
  • the components of the alarm chip are driven by an energy source, e.g. a lithium battery, built into the chip, this type of battery having a long life and being able to supply electrical current at an approximately constant voltage throughout the life of the battery.
  • an energy source e.g. a lithium battery
  • an accelerometer is used to detect motional changes in a moving object, there being emitted by abnormal motional changes an activation signal for a subsequent action or signal, e.g. a signal for activating the inflation of an airbag in a vehicle in a possible collision.
  • the accelerometer of the alarm chip is used to detect motional changes in an object which is at rest relative to the geodetic surroundings in a normal position of use, the object for example being formed by a window or a door in a building, an installation or a structure, wherein, by abnormal motional changes, an alarm signal is transmitted to a central and/or external alarm unit/alarm system arranged to the building, installation or structure.
  • an alarm chip primarily has the effect that a building, installation or structure may be provided with shell-protection against burglary and undesired entry, in a simple and inexpensive way.
  • the possible use of wireless signal communication makes redundant, at the same time, the laying of connecting cables/wires between the alarm chip and a central and/or external alarm unit/alarm system arranged to the building, installation or structure. Windows and doors may thereby come from the manufacturer with alarm chips attached or inserted.
  • the alarm chip may be retrofitted by means of simple means, e.g. tape.
  • the alarm chip may possibly also be provided with, or have arranged thereto, other types of sensors to the degree in which this is of advantage, or to the degree in which such sensors are being made available, such sensors being arranged either to give warning of burglary or undesired entry and/or the sensor(s) possibly being arranged for other purposes, e.g. temperature and/or smoke/gas detection.
  • the alarm chip concerned is also arranged to distinguish a " number of non-alarm signals from alarm signals, so that there is an essentially smaller tendency towards false alarms than what is the case with many known alarm solutions.
  • the alarm chip also transfers signals continuously to an alarm unit/alarm system, so that the user does not have to deal with possible activation or deactivation of the • alarm chip or the alarm unit/alarm system arranged to the building, installation or structure, which is necessary, for example, when PIR-detectors and magnetic contact sensors are used.
  • each individual alarm chip preferably outputs unique coded signals, so that i.a. its identity and address are specifically defined relative to any other alarm chips connected to the alarm unit/alarm system.
  • the appended drawn figure (Fig. 1) shows a perspective sectional view of a window 2 formed by double window glass 4 mounted in a window frame 6 , the window frame 6 being disposed in an associated window casing 8 of a building not shown.
  • the window glass 4 has an alarm chip 10 according to the invention attached thereto.
  • the alarm chip 10 is provided with an accelerometer, not shown in the drawn figure, an ASIC electronic signal processing circuit not shown, incorporating i.a. an analogue-to-digital converter (ADC-component) and an electronic processor for processing digital acceleration data from the accelerometer.
  • the alarm chip 10 is moreover provided with a radio frequency transmitter (RF transmitter) not shown, and a lithium battery, not shown, providing the alarm chip 10 with electrical power.
  • RF transmitter radio frequency transmitter
  • the ASIC is arranged with software in the form of suitable algorithms, e.g.. seismology-based algorithms, continuously processing incoming acceleration data produced by physical influencing forces on the window glass 4.
  • suitable algorithms e.g.. seismology-based algorithms
  • normal motional change patterns are distinguished from abnormal motional change patterns, the normal motional change patterns occurring for example as a consequence of knocking, scraping, rain, hail, wind, acoustic waves/noise, whereas abnormal motional change patterns appear as a consequence of breaking of the window glass 4 and/or breakage of the window frame 6 or window casing 8.
  • the ASIC is arranged to carry out a so-called pre-filtering of incoming acceleration signals, in which the signals are first processed in a simplified part of said algorithms, and in which acceleration courses corresponding to simple and/or frequently occurring normal motional changes or patterns of motional change are recognized, in which case the ASIC is arranged to stop the forwarding of signals.
  • the output signals are coded/encrypted in the ASIC before being transferred in continuous signal pulses through said radio frequency transmitter to a central and/or external alarm unit/alarm system, not shown in the drawing, connected to the alarm chip 10. Otherwise the output signals are formed of both alarm signals and non-alarm signals ("alive & well” messages), the output signals in normal circumstances mainly being made up of "alive & well” messages.
  • "alive & well" messages are transmitted by means of the ASIC in a pseudo-random order, each message containing information to the alarm unit/alarm system about the identity of the alarm chip, when will the next message be sent and in which coded/encrypted format will this message be available. Thereby, by each "alive & well” message the alarm unit/alarm system will be ready to receive and decode the message, any irregularities in the expected signal resulting in an alarm being activated by the alarm unit/alarm system.
  • the alarm chip 10 On detection of an abnormal motional change pattern, the alarm chip 10 outputs, by means of the radio frequency transmitter, a wireless coded/encrypted alarm signal to a radio frequency receiver, not shown in the drawn figure, connected to the alarm unit/alarm system. On detection of normal motional change patterns, the alarm chip 10 moreover outputs signal pulses in a pseudo-random order, interpreted by the alarm unit/alarm system as non-alarm signals, any interruptions or irregularities in the expected signal pulses being interpreted by the alarm unit/alarm system as alarm signals.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Led Devices (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

L'invention porte sur un microcircuit intégré (10) pour alarme et sur son utilisation dans des systèmes d'alarme contre les cambriolages ou entrées non désirées dans des bâtiments, installations ou structures, de préférence dans des systèmes de protection de type par enveloppe. Le microcircuit (10) de l'alarme permet de détecter, au moyen d'un accéléromètre associé, des mouvements/vibrations dans l'objet auquel est fixé le microcircuit (10), cet objet pouvant être, par exemple, une fenêtre (2), une porte, éventuellement un cadre ou encadrement de fenêtre (2) ou porte. Le mouvements/vibrations sont convertis par l'accéléromètre en un flux sortant de valeurs d'accélération qui sont ensuite traitées par un processeur dans un circuit de traitement de signaux où, à l'aide d'algorithmes, les valeurs d'accélération sont reconnues et séparés en signaux de sortie indiquant l'alarme ou en signaux de sortie n'indiquant pas l'alarme, les signaux de sortie pouvant être codés/chiffrés de sorte que chaque microcircuit (10) possède une adresse et une identité uniques. Les signaux peuvent être également émis sous forme d'impulsions, de préférence dans un ordre dit pseudo-aléatoire, les signaux de sortie étant émis, de préférence par voie hertzienne, à au moins un système/unité d'alarme central et/ou externe placé dans le bâtiment, l'installation ou la structure.
PCT/NO2001/000423 2000-10-26 2001-10-22 Microcircuit integre pour alarme et son procede d'utilisation WO2002035490A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP01981177A EP1330801B1 (fr) 2000-10-26 2001-10-22 Microcircuit integre pour alarme et son procede d'utilisation
DE60108262T DE60108262T2 (de) 2000-10-26 2001-10-22 Alarmchip und verfahren zu dessen verwendung
US10/399,846 US6989746B2 (en) 2000-10-26 2001-10-22 Alarm chip and use of the alarm chip
AT01981177T ATE286608T1 (de) 2000-10-26 2001-10-22 Alarmchip und verfahren zu dessen verwendung
AU2002212836A AU2002212836A1 (en) 2000-10-26 2001-10-22 Alarm chip and use of the alarm chip
DK01981177T DK1330801T3 (da) 2001-10-22 2001-10-22 Alarmchip og anvendelse af alarmchippen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20005405 2000-10-26
NO20005405A NO312796B1 (no) 2000-10-26 2000-10-26 Alarmbrikke

Publications (1)

Publication Number Publication Date
WO2002035490A1 true WO2002035490A1 (fr) 2002-05-02

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Application Number Title Priority Date Filing Date
PCT/NO2001/000423 WO2002035490A1 (fr) 2000-10-26 2001-10-22 Microcircuit integre pour alarme et son procede d'utilisation

Country Status (7)

Country Link
US (1) US6989746B2 (fr)
EP (1) EP1330801B1 (fr)
AT (1) ATE286608T1 (fr)
AU (1) AU2002212836A1 (fr)
DE (1) DE60108262T2 (fr)
NO (1) NO312796B1 (fr)
WO (1) WO2002035490A1 (fr)

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EP1330801A1 (fr) 2003-07-30
NO20005405D0 (no) 2000-10-26
NO312796B1 (no) 2002-07-01
DE60108262T2 (de) 2005-09-22
US6989746B2 (en) 2006-01-24
DE60108262D1 (de) 2005-02-10
NO20005405L (no) 2002-04-29
AU2002212836A1 (en) 2002-05-06
ATE286608T1 (de) 2005-01-15
EP1330801B1 (fr) 2005-01-05
US20040012502A1 (en) 2004-01-22

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